Process for the removal of hydrogen sulfide from gas streams

Patent · Tue Dec 23 04:00:00 EST 1980

OSTI ID:5854323

Werner, E S.E.; Ouwerkerk, C; Cornelisse, R

The feed for Claus sulfur-recovery plants generally consists of the hydrogen sulfide-containing gases produced during the regeneration step of gas-purification processes that reduce the quantity of sulfur-containing components in industrial gases such as refinery gas, natural gas, and synthesis gases obtained from the partial combustion of hydrocarbons and coal. This improved purification process works exceptionally well on gases containing relatively high amounts of carbon dioxide in comparison with the gas's hydrogen sulfide content, thus avoiding the downstream operating difficulties that arise when a Claus-plant feed-gas stream contains too much carbon dioxide. In addition to removing hydrogen sulfide and carbon dioxide, the gas-purification process can handle carbonyl sulfides and mercaptans as well. Moreover, the process increases the sulfur-recovery efficiency of the Claus unit by subjecting the Claus off-gases to a further treatment for removal of residual sulfur compounds.

• Assignee: Shell Oil Co.
• Patent Number(s): US 4241032
• OSTI ID: 5854323
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
CHALCOGENIDES
CLAUS PROCESS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NATURAL GAS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PURIFICATION
REFINERY GASES
REMOVAL
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS GAS